Area code 748: where it is and who calls from it
Area code 748 is in Colorado.
Western and northern parts of Colorado
| Where | Colorado |
|---|---|
| Time zone | Mountain Time ยท local time |
| In service since | 2025 |
| Overlay | Yes, with 970 |
Overlay: 748 covers the same area as 970. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Other area codes in Colorado
Got a call from 748?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 748 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.